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Nutrition discussion on Protein, within the Bodybuilding Forum; I have recently read that excessive amounts of protien can put stress on your kidneys and interfere with calcium absorption. ...


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Old 11-01-2008, 03:14 AM   #1
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I have recently read that excessive amounts of protien can put stress on your kidneys and interfere with calcium absorption. Has anyone heard this before and is there any truth behind it? Also, how much protein can the body digest in one go? I sometimes eat meals that contain more than 100g of protein.
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Old 11-01-2008, 06:04 AM   #2
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You can probably handle 50ish grams or so at one time, I would guess...maybe more. It depends on the person & the amount of digestive enzymes they produce. If you have healthy kidneys, then a high protein diet isn't bad. I've read about calcium deficient people purposefully being placed on a high protein diet before, I believe. I'll try to remember when/why that was.

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Old 11-01-2008, 06:46 AM   #3
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Thanks for your reply ross, im thinking, is it possible that if you eat a meal like i ate last night, 4 large sirlion steaks, ( i ate them cus they would have been out of date today) then the protein is time released over a long period?
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Old 11-01-2008, 09:17 AM   #4
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I don't think so. I know that proteins like soy and casein (especially casein) are absorbed slower than whey, but I'm thinking the body would absorb it at the same time. If you want to get a time-released effect, try taking some type of healthy fats along with the protein. This is good before going to bed.

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Old 11-01-2008, 09:17 AM   #5
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Mmm, sirloin.......
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Old 11-01-2008, 09:29 AM   #6
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also....just drink a good amount of water if you're worried about your kidney's and liver.
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Old 11-01-2008, 10:13 AM   #7
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Thanks guys
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Old 11-01-2008, 10:17 AM   #8
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http://www.maxcondition.com/page.php?92

http://www.bodybuilding.net/nutritio...myth-4275.html

Quote:
Originally Posted by John
don't think so. I know that proteins like soy and casein (especially casein) are absorbed slower than whey, but I'm thinking the body would absorb it at the same time.
Nothing is ever absorbed at the same time if that means all at once..not even whey. It's always released in a steady stream.

The body is quite efficient in absorbing whatever you take in. Nobody ever absorbs one hundred percent of any one protein source, depending on the source, but it's gotten to where people act like human digestion is so fickle we should all be malnourished. It's based on nothing but thin air.

The big picture: How much is enough protein. The little details: Timing. The big picture always supercedes the little details in importance and priority. Everything else is just icing.

I'm going to make a general post on digestion. You HAVE to start with the BASICS. A lack of general knowledge and going right to the small details is what leads to these myths and confusion and misinformation.

I think one general misstep is viewing dietary protein as meeting your "protein needs". You body does not absorb proteins for proteins. The body makes it's own proteins. Instead it breaks down proteins into aminos, mostly, and sometimes dipeptides.

Last edited by EricT; 11-01-2008 at 10:54 AM..

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If you act sanctimonious I will just list out your logical fallacies until you get pissed off and spew blasphemous remarks.
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Old 11-01-2008, 10:50 AM   #9
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Some more reading, protein, aminos, and a digestion primer:

http://mesomorphosis.com/articles/mc...protein-01.htm

http://maxcondition.com/page.php?86

http://maxcondition.com/page.php?69
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Old 11-01-2008, 10:55 AM   #10
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Wow alot of good info there and it is a question i hear asked all the time. Cheers Eric
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